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Cite as Citation reference for the source document. Koami Soulemane Hayibo and Joshua M.Pearce. A review of the value of solar methodology with a case study of the U.S. VOS. Renewable and Sustainable Energy Reviews 137, 2021, 110599. https://doi.org/10.1016/j.rser.2020.110599 open access

Distributed generation with solar photovoltaic (PV) technology is economically competitive if net metered in the U.S. Yet there is evidence that net metering is misrepresenting the true value of distributed solar generation so that the value of solar (VOS) is becoming the preferred method for evaluating economics of grid-tied PV. VOS calculations are challenging and there is widespread disagreement in the literature on the methods and data needed. To overcome these limitations, this study reviews past VOS studies to develop a generalized model that considers realistic future avoided costs and liabilities. The approach used here is bottom-up modeling where the final VOS for a utility system is calculated. The avoided costs considered are: plant O&M fixed and variable; fuel; generation capacity, reserve capacity, transmission capacity, distribution capacity, and environmental and health liability. The VOS represents the sum of these avoided costs. Each sub-component of the VOS has a sensitivity analysis run on the core variables and these sensitivities are applied for the total VOS. The results show that grid-tied utility customers are being grossly under-compensated in most of the U.S. as the value of solar eclipses the net metering rate as well as two-tiered rates. It can be concluded that substantial future work is needed for regulatory reform to ensure that grid-tied solar PV owners are not unjustly subsidizing U.S. electric utilities.

Highlights[edit | edit source]

  • Distributed generation solar photovoltaic (PV) economically competitive if net metered in U.S.
  • Value of solar (VOS) is becoming preferred method for evaluating economics of grid-tied PV.
  • Here review VOS calculations, inputs and sensitivity analysis on all core variables.
  • Results: VOS eclipses the net metering rate as well as two-tiered rates in US.
  • Regulatory reform needed: solar PV owners are unjustly subsidizing electric utilities.

Keywords[edit | edit source]

Photovoltaic; Utility policy; Distributed generation;Value of solar;Net metering; Economics; Levelized cost of electricity

See also[edit | edit source]

FA info icon.svg Angle down icon.svg Page data
Authors Koami Soulemane Hayibo, Joshua M. Pearce
License CC-BY-SA-4.0
Language English (en)
Related 0 subpages, 22 pages link here
Impact 258 page views
Created December 4, 2020 by Joshua M. Pearce
Modified February 23, 2024 by Maintenance script
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